Update readme.python.md (Azure#12216)

Author: andyzhangx

specification/containerservice/resource-manager/readme.python.md

@@ -96,19 +96,6 @@ namespace: azure.mgmt.containerservice.v2020_12_01
 output-folder: $(python-sdks-folder)/containerservice/azure-mgmt-containerservice/azure/mgmt/containerservice/v2020_12_01
 ```
 
-### Tag: package-2020-12-01-only and python
-
-These settings apply only when `--tag=package-2020-12-01-only --python` is specified on the command line.
-Please also specify `--python-sdks-folder=<path to the root directory of your azure-sdk-for-python clone>`.
-
-``` yaml $(tag) == 'package-2020-12-01-only' && $(python)
-python:
-  namespace: azure.mgmt.containerservice.v2020_12_01
-  output-folder: $(python-sdks-folder)/containerservice/azure-mgmt-containerservice/azure/mgmt/containerservice/v2020_12_01
-namespace: azure.mgmt.containerservice.v2020_12_01
-output-folder: $(python-sdks-folder)/containerservice/azure-mgmt-containerservice/azure/mgmt/containerservice/v2020_12_01
-```
-
 ### Tag: package-2020-11-01-only and python
 
 These settings apply only when `--tag=package-2020-11-01-only --python` is specified on the command line.